package thread;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class ThreadPoolDemo {
    public static void main(String[] args) {
        ExecutorService pool = Executors.newFixedThreadPool(2);
        for (int i = 0; i < 3; i++) {
            Runnable r = new Runnable() {
                public void run() {
                    Thread  t = Thread.currentThread();
                    System.out.println(t+"正在执行任务！");
                    try {
                        Thread.sleep(5000);
                    } catch (InterruptedException e) {
                        throw new RuntimeException(e);
                    }
                    System.out.println(t+"任务执行完毕！");
                }
            };
            pool.execute(r);
        }
        pool.shutdown();
        System.out.println("所有任务执行完毕！线程池关闭");
    }
}
